Public water system · WI6490334
ActiveClayton Waterworks
At a glance
Clayton Waterworks (PWSID WI6490334) is an active community water system in Polk County, Wisconsin. It reports serving 765 people through 283 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
765
Service connections
283
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Clayton Waterworks compare with other water systems in Polk County?
By EPA's size categories, Clayton Waterworks is a small system (501 to 3,300 people). Polk County has 187 active public water systems. Its population served is about 6.3 times the county average of 121 people per system, and accounts for 3.4% of the 22,690 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Clayton Waterworks is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wisconsin has 1,053 active community water systems, 9.5% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Clayton Waterworks?
EPA lists Clayton Waterworks as owned by a local government. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 20 of the 187 active systems in Polk County (11%) are also owned by a local government.
Does Clayton Waterworks have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2024. The violations listed here began between June 1993 and October 2024. By type: 2 monitoring and reporting, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule Revisions, Public Notice, Lead and Copper Rule and Total coliform bacteria (TCR). EPA lists 3 as resolved and 1 as unaddressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1993-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 4 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Clayton Waterworks: frequently asked questions
Who runs Clayton Waterworks?
Clayton Waterworks (PWSID WI6490334) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Clayton Waterworks serve?
Clayton Waterworks reports serving 765 people through 283 service connections in Polk County, Wisconsin.
Where does Clayton Waterworks get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Clayton Waterworks have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2024. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Clayton Waterworks' water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Clayton Waterworks' water quality report?
As a community water system, Clayton Waterworks must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Polk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Amery Waterworks | Polk | 2,962 | Community | Groundwater |
| Osceola Waterworks | Polk | 2,680 | Community | Groundwater |
| St Croix Falls Waterworks | Polk | 2,079 | Community | Groundwater |
| Frederic Waterworks | Polk | 1,241 | Community | Groundwater |
| Luck Waterworks | Polk | 1,150 | Community | Groundwater |
| Clear Lake Waterworks | Polk | 1,061 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Clayton Waterworks, PWSID WI6490334, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/clayton-waterworks-wi6490334 (data as of October 1, 2026).